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1. 发明授权

US06385217B1 Compact wavelength-independent wavelength-locker for absolute wavelength stability of a laser diode 有权
标题翻译：紧凑的波长独立波长锁定器，用于激光二极管的绝对波长稳定性
公开(公告)号：US06385217B1
公开(公告)日：2002-05-07
申请号：US09250879
申请日：1999-02-16
申请人： Harmeet Singh , Fahri Diner
发明人： Harmeet Singh , Fahri Diner
IPC分类号： H01S310
CPC分类号： H01S5/0687
摘要： A wavelength independent wave-locker arrangement is used to control the output wavelength of a laser diode. In the wave-locker arrangement, a narrow-band power splitter is responsive to the reception of a portion of an optical output signal from the laser diode for splitting the received optical signal into first and second coupler optical output signals, respectively. First and second photodetectors are coupled to receive the first and second coupler optical output signals, respectively, and generate respective corresponding first and second electrical output signals. A control unit is responsive to the reception of the first and second electrical output signals from the first and second photodetectors for generating predetermined control signals to the laser diode for maintaining the wavelength of the laser diode at a predetermined constant value.
摘要翻译：使用波长独立的波形锁存器布置来控制激光二极管的输出波长。在波形锁定装置中，窄带功率分配器响应于来自激光二极管的一部分光输出信号的接收，用于将接收的光信号分别分成第一和第二耦合器光输出信号。第一和第二光电探测器被耦合以分别接收第一和第二耦合器光输出信号，并且产生相应的对应的第一和第二电输出信号。控制单元响应于来自第一和第二光电检测器的第一和第二电输出信号的接收，以产生到激光二极管的预定控制信号，以将激光二极管的波长保持在预定的恒定值。

2. 发明授权

US06185345B2 Ultra-stable optical wavelength division multiplexer/demultiplexer 失效
标题翻译：超稳定光波分复用器/解复用器
公开(公告)号：US06185345B2
公开(公告)日：2001-02-06
申请号：US09271524
申请日：1999-03-18
申请人： Harmeet Singh , Fahri Diner
发明人： Harmeet Singh , Fahri Diner
IPC分类号： G02B628
CPC分类号： G02B6/29355 , G02B6/12007 , G02B6/2835 , G02B6/2861 , G02B6/2938
摘要： An unbalanced Mach-Zehnder interferometer is useable in an optical wavelength division multiplexer or demultiplexer to provide wavelength stability. First and second fused tapered couplers in the unbalanced Mach-Zehnder interferometer are each responsive to the reception of at least one first and second optical input signals for generating separate predetermined first and second optical output signals. The first and second output signals from the first fused tapered coupler are coupled via first and second optical waveguides, respectively, to respective first and second optical inputs of the second fused tapered coupler. First and second output signals from the second fused tapered coupler are provided as first and second output signals from the unbalanced Mach-Zehnder interferometer. A variable delay is coupled in one of the first and second waveguides coupling the first and second optical output signals from the first fused tapered coupler to the first and second optical inputs of the second fused tapered coupler for introducing a predetermined variable delay into an optical signal passing therethrough for maintaining a relative delay between the first and second waveguides at a constant value. A plurality of such Mach-Zehnder interferometers can be used to form cascaded stages of an optical wavelength division multiplexer or demultiplexer.
摘要翻译：非平衡马赫 - 曾德干涉仪可用于光波分复用器或解复用器中以提供波长稳定性。不平衡马赫 - 策德尔干涉仪中的第一和第二熔融锥形耦合器各自响应于接收至少一个第一和第二光学输入信号，以产生分开的预定的第一和第二光学输出信号。来自第一熔接锥形耦合器的第一和第二输出信号分别经由第一和第二光波导耦合到第二熔接锥形耦合器的相应的第一和第二光学输入端。来自第二熔接锥形耦合器的第一和第二输出信号被提供为来自不平衡马赫 - 曾德尔干涉仪的第一和第二输出信号。可变延迟耦合在将第一和第二光输出信号从第一融合锥形耦合器耦合到第二融合锥形耦合器的第一和第二光输入的第一和第二波导中的一个中，以将预定的可变延迟引入光信号通过其以恒定值保持第一和第二波导之间的相对延迟。可以使用多个这样的马赫 - 策德尔干涉仪来形成光波分复用器或解复用器的级联级。

3. 发明授权

US06295396B1 Method and apparatus for higher-order chromatic dispersion compensation 有权
标题翻译：高阶色散补偿的方法和装置
公开(公告)号：US06295396B1
公开(公告)日：2001-09-25
申请号：US09326079
申请日：1999-06-04
申请人： Xiang-Dong Cao , Fahri Diner
发明人： Xiang-Dong Cao , Fahri Diner
IPC分类号： G02B634
CPC分类号： G02B6/2932 , G02B6/29394
摘要： An optical arrangement provides dispersion slope compensation to a received dispersion distorted input signal comprising N×M wavelength multiplexed channels. In the optical arrangement, a major dispersion compensating fiber (DCF) provides a first predetermined chromatic dispersion correction value to the N×M wavelength channels. A plurality of fiber Bragg gratings (FBGs) are serially coupled along an optical fiber. Each FBG is arranged to reflect a separate one of N groups of wavelength channels received in the input signal back along the optical fiber in order to provide a second dispersion slope compensating value. Either, the FGBs can chirped to compensate for the dispersion slope within each group of wavelength channels, or each FBG only reflects one group or wavelength channels and small DCFs introduce dispersion slope compensation into the FBG reflected signals. The combination of the first and second dispersion compensating values provided by major DSC and in the reflected signals from the plurality of FBGs, respectively, are used to generate a N×M wavelength multiplexed channel dispersion compensated output signal from the optical arrangement wherein the dispersion found in the input signal is substantially eliminated. A counter-propagating Raman pump signal in the major DCF can also be used to compensate for insertion losses of the FBGs and small DCFs.
摘要翻译：光学装置为包括N×M个波长多路复用通道的接收色散失真输入信号提供色散斜率补偿。在光学装置中，主色散补偿光纤（DCF）向N×M波长信道提供第一预定色散校正值。多个光纤布拉格光栅（FBG）沿光纤串联耦合。每个FBG被布置成沿着光纤反射在输入信号中接收的N组波长信道中的单独一个，以便提供第二色散斜率补偿值。或者，FGB可以啁啾以补偿每组波长通道内的色散斜率，或者每个FBG仅反射一组或波长通道，并且小DCF将色散斜率补偿引入到FBG反射信号中。由主要DSC提供的第一和第二色散补偿值和来自多个FBG的反射信号的组合分别用于从光学装置产生NxM波长多路复用信道色散补偿输出信号，其中在输入信号基本消除。主要DCF中的反向传播拉曼泵浦信号也可用于补偿FBG和小型DCF的插入损耗。

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